feat: 增加推送通知配置

backend/internal/integrations/push/wpush.go

@@ -0,0 +1,73 @@
+package push
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+const wpushAPIURL = "https://api.wpush.cn/api/v1/send"
+
+// WPushConfig 是 WPush 推送的配置。
+type WPushConfig struct {
+	APIKey string
+}
+
+// WPushProvider 实现了通过 WPush 发送推送。
+// 支持微信公众号、飞书、钉钉、企业微信等多种渠道，取决于用户在 WPush 侧的配置。
+type WPushProvider struct {
+	apiKey string
+	client *http.Client
+}
+
+// NewWPushProvider 创建 WPush 推送 Provider。
+// APIKey 为空时返回 ErrProviderConfigInvalid。
+func NewWPushProvider(cfg WPushConfig) (*WPushProvider, error) {
+	if strings.TrimSpace(cfg.APIKey) == "" {
+		return nil, ErrProviderConfigInvalid
+	}
+	return &WPushProvider{
+		apiKey: strings.TrimSpace(cfg.APIKey),
+		client: &http.Client{Timeout: 10 * time.Second},
+	}, nil
+}
+
+func (p *WPushProvider) Name() string { return "wpush" }
+
+func (p *WPushProvider) Send(ctx context.Context, msg Message) error {
+	form := url.Values{}
+	form.Set("apikey", p.apiKey)
+	form.Set("title", msg.Title)
+	form.Set("content", msg.Content)
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, wpushAPIURL, strings.NewReader(form.Encode()))
+	if err != nil {
+		return fmt.Errorf("wpush: create request: %w", err)
+	}
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+
+	resp, err := p.client.Do(req)
+	if err != nil {
+		return fmt.Errorf("wpush: send failed: %w", err)
+	}
+	defer resp.Body.Close()
+
+	bodyBytes, _ := io.ReadAll(resp.Body)
+
+	var result struct {
+		Code    int    `json:"code"`
+		Message string `json:"message"`
+	}
+	if err := json.Unmarshal(bodyBytes, &result); err != nil {
+		return fmt.Errorf("wpush: parse response: %w (body: %s)", err, string(bodyBytes))
+	}
+	if result.Code != 0 {
+		return fmt.Errorf("wpush: api error code=%d: %s", result.Code, result.Message)
+	}
+	return nil
+}